Treatment of the MFE280, AN3CA, and MFE296 endometrial carcinoma cell lines harboring FGFR2 mutations with the FGFR inhibitor PD173074 (31) resulted in a marked decrease in colony formation in soft agar and cell survival in liquid culture, with IC50s in ranges of 20–30 and 2–40 nM, respectively, whereas similar treatment of the Hec-1B cell line expressing WT FGFR2 had little or no effect...